File:Birthday candles.jpg|Candles spell out the traditional English birthday greeting|thumb|250px
A '''birthday''' is an occasion when a person or institution celebrates the anniversary of their birth. Birthdays are celebrated in numerous cultures, often with a gift, party, or rite of passage
Many religions celebrate the birth of their founders with special holidays (e.g. Christmas
, Buddha's Birthday
Note the distinction between birth'''day''' and birth'''date''': The former, other than February 29, occurs each year (e.g. May 11), while the latter is the exact date a person was born (e.g., May 11, 1998).